Come aggiungere un pulsante cliccabile sulla cella della tabella?

Question

Aggiungo dinamicamente un pulsante nella cella di visualizzazione tabella. Pulsante mostrato sul tavolo ma non riesco a selezionarli. Ecco il mio codice,

Questo codice mia classe tableviewcell:

MessageTableViewCell.h

#import <UIKit/UIKit.h> 
@interface MessageTableViewCell : UITableViewCell { 
{IBOutlet UIButton *chat_pic_btn;}} 
@property (nonatomic, retain) UIButton *chat_pic_btn; 
@end; 

MessageTableViewCell.m

- (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier {if (self = [super initWithStyle:style reuseIdentifier:reuseIdentifier]) {chat_pic_btn=[[UIButton alloc]init]; 
[self.contentView addSubview:chat_pic_btn];}} 

MessageTable.m

-(void)customActionPressed :(id)sender 
{ 
    UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Custom Button Pressed" 
                 message:[NSString stringWithFormat: @"You pressed the custom button on cell"] 
                 delegate:self cancelButtonTitle:@"Great" 
               otherButtonTitles:nil]; 
    [alertView show]; 
} 

- (UITableViewCell *)tableView:(UITableView *)myTableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { 

    static NSString *CellIdentifier = @"CellIdentifier"; 
    MessageTableViewCell *cell = (MessageTableViewCell *)[myTableView dequeueReusableCellWithIdentifier:CellIdentifier]; 

    if (cell == nil) { 
     // cell = [[MessageTableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:CellIdentifier]; 
     cell = [[MessageTableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier]; 
    } 
cell.chat_pic_btn.frame = CGRectMake(180, 24, 70,35); 
      [cell.chat_pic_btn setImage:[UIImage imageNamed:@"done.png"]forState:UIControlStateNormal]; 
      [cell.chat_pic_btn addTarget:self action:@selector(customActionPressed:) forControlEvents:UIControlEventTouchDown]; 
return cell; 
} 

Plea se mi aiuti. Grazie.

Answer 1

Suggerisco elimini la presa Button in TableViewCell. e basta creare il tuo pulsante dinamicamente in cellForRowAtIndexPath: Ho creato una classe SampleCell, sottoclasse di UITableViewCell, ha uno sbocco UILabel che ho chiamato "lbl". Questo dovrebbe funzionare sul tuo codice, assumendo che il tuo selettore si trovi sulla stessa classe in cui inserisci la tua tablview;

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath 
{ 
    static NSString *CellIdentifier = @"SampleCell"; 
    SampleCell *cell = (SampleCell *) [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; 

    if (cell == nil) { 
     NSArray* topLevelObjects = [[NSBundle mainBundle] loadNibNamed:@"SampleCell" owner:self options:nil]; 
     for (id currentObject in topLevelObjects) { 
      if ([currentObject isKindOfClass:[UITableViewCell class]]) { 
       cell = (SampleCell *)currentObject; 
       break; 
      } 
     } 
    } 
    // Configure the cell. 
    cell.lbl.text = @"Hello"; 
    UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect]; 

    //set the position of the button 
    button.frame = CGRectMake(cell.frame.origin.x + 100, cell.frame.origin.y + 20, 100, 30); 
    [button setTitle:@"World" forState:UIControlStateNormal]; 
    [button addTarget:self action:@selector(customActionPressed:) forControlEvents:UIControlEventTouchUpInside]; 
    button.backgroundColor= [UIColor clearColor]; 
    [cell.contentView addSubview:button]; 

    return cell; 
} 

Answer 2

UIButton *yourBtn = [[UIButton alloc] initWithFrame:CGRectMake(0,0, 50, 50)]; 
[yourBtn setImage:[UIImage imageNamed:@"yourImage.png"] forState:UIControlStateNormal]; 
[yourBtn addTarget:self action:@selector(submitBtnPress:) forControlEvents:UIControlEventTouchUpInside]; 

cell.accessoryView = yourBtn; 

Answer 3

Non hai dato ogni caso il controllo al pulsante o modificarlo per UIControlEventTouchUpInside da UIControlStateNormal e di farlo solo una volta :)

Answer 4

http://www.roostersoftstudios.com/2011/05/01/iphone-custom-button-within-a-uitableviewcell/

Questo può aiutare

Answer 5

assicurarsi di impostare UserInteraction su SÌ in vista di cella e il pulsante

self.userInteractionEnabled = YES;